Lintel construction



June 10, 1930. J. F. MAKOWSKI LINTEL CONSTRUCTION Filed April 11, 192B INVENTOR cZEMaIcozvski BY @Mqgbwz ATTO R N EY Patented June 10, 1930 UNITED STATES PATENT OFFICE JOHN F. MAKOWSKI, OF STOCKTON, CALIFORNIA, ASSIGNOR TO FIRE PROOF WALL COM- PANY, OF RENO, NEVADA, A CORPORATION LINTEL cons'rnuc'rion Application filed April 11,

This invention relates to wall construction and particularly to a method of forming or constructing lintels across the doorways in walls which are erected from blocks or tiles.

In walls of this general character in which 7 the lintels are merely formed by a row or course of the tile or blocks of the wall, there is a decided tendency for cracks to develop, leading from the corners of the doors to the 10 tops of the wall in opposite directions and following the staggered vertical joints or separation lines of the tiles of the different courses. This, of course, is an obvious objectionable feature and weakness in the wall.

The principal object of my invention therefore is to provide a lintel construction of such a nature that such cracking tendency will be eliminated, and the lintel forms a solid unitary member extending across the doorway to points some distance to the sides of the same.

- A further object of the invention is to arrange for the construction of the lintel so that it is carried out in connection with the erection of the wall in a simple and easy manner.

These objects I accomplish by means of such structure and relative arrangement of parts as will fully appear by a perusal of the following specification and clalms.

In the drawings similar characters of reference indicate corresponding parts in the several views:

Fig. 1 is a perspective View of a wall in the process of erection, showing the erected wall carried to a height at which the lintel is to be then formed, and also shown in connection with a special form used in erecting the wall and constructing the lintel.

Fig. 2 is a fragmentary perspective view of the wall showing the first step in forming the lintel.

Fig. 3 is a similar View illustrating the next step in the lintel construction.

Fig. 4 is a fragmentary front elevation of the wall partly broken out and showing the completed lintel.

In my wall and lintel construction I employ a wall form substantially as shown in my co- 50 pending application for patent, Serial No.

1928. Serial No. 269,082.

269,081, filed Apr. 11, 1928, and which consists essentially of horizontally spaced uprights I faced on one side with horizontal and vertically spaced slats 2.

The door buck 3 is placed directly against the form and temporarily secured in place by suitable means, and the tile 4 for the wall as erected abut against the form and against the opposite sides of the buck and are placed as usual in horizontal courses with the ver tical edges of the tile in staggered order. Adjacent the top of the buck and for a distance thereabove to a height not less than the height of a tile, the relatively narrow slats 2 are replaced by a single wide slat 5 as shown.

In laying the tile the complete courses from the buck toward the opposite ends of the wall stop short adjacent and preferably a slight distance below the top of the buck, and the tile of the next superimposed course terminate some distance from the sides of the buck, as shown in Fig. 1. No more tile are then laid for the time being or until the lintel is constructed.

The tile of the type preferably used are such as are shown in said aforementioned c0- pending application, and have horizontal openings 6 extending from end to end thereof. In the ends of the exposed openings of the separated tile of the upper course, I may then if desired place reinforcing bars 7, which extend from said tile across the buck as shown in Fig. 2. A board 8 is then temporarily secured to the top of the buck on the outside thereof, this board extending across the buck and overlapping the ends of the separated tile of the upper course somewhat as shown in Fig. 3. The buck being the same width as the tile, the board will abut snugly against the sides of the tile as will be evident. The upper edge of the board is disposed so as to be level with the upper edges of the tile of the upper course.

An inclosed trough is thus formed over the buck between boards 5 and 8, the top of the buck and the ends of the separated tile of the upper course. This trough is then completely filled with a plastic cementitious material. 9, which is preferably the same nature as the tile, and whose composition is as set forth in my co-pending application for patent, Serial No. 307,549, filed Sept. 18, 1927, or as in my copending application, v.Serial No. 207,550, filed September 18, 1927.

Suchmaterialwhen poured into the trough of course envelops the bar 7 andalso projects some distance into the tile openings 6; The outer board 8 being level with the top of the 7 device, still in practice such deviations from v above, the buck and between the walltermi'- tile the material when poured may be troweled off flush with the tile, soas to then ofier 1 no interference with the laying'of subsequent courses of tile above the lintel, and which will be horizontally alined with the courses already built as shown in'Fig. 4. i It will thus be seen that when the material 9 is set it forms a solid unitary beam across the buck which is anchored in the end tile of the upper course and eliminates the'possibility of cracks de- 3 veloping at the corners of the buck, since the hntel has no vertical o1nts at such corners.

The height of theback board 5 is prefer ably such as to take care of any variation in the heights of-doors which may be used within reasonable limlts.

From the foregoing description it will be readily seen that I have produced such a device as substantially fulfills the objects of the invention as set forthherein.

While this specification sets forth in detail f the present and preferred construction of the such detail may be resorted to as do not form a departure from the spirit of the invention, as defined by the appended claims.

Having thusdescribed myinvention what I claim as new and useful and desire to secure by'Letters Patent is:

- 1.. A methodof forming a lintel comprising erecting a buck in place, building up a wall against theopposite sides of the buck, c

terminating the building ofthe walla distancev above andto each side of the buck, and thenfilling in plastic cementitious material nals to form the lintel.

' 2. A method offorininga lintel compris 7 ing erecting a buck in place, building up .a wall against the opposite sides of the buck, terminating the building of the walla distanceabove-and to each side of the buck,

forming a trough over thecbuck and between the wall terminals, and filling the troughwith v p a plastic cementitious material to formthe lintel, c r.

In testimony whereof I a fix my signature. JOHN F. MAKOVVSKI. 

